Method for activating and regenerating waste industrial activated aluminum oxide

An activated alumina, industrial technology, applied in the direction of alumina/aluminum hydroxide, aluminate/alumina/aluminum hydroxide purification, chemical instruments and methods, etc., can solve environmental pollution and other problems, and achieve environmental pollution, Less damage and lower energy consumption

Active Publication Date: 2017-05-10
杭州贝采催化剂有限公司 +1
View PDF0 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method realizes the resource utilization of waste industrial activated alumina, and at the same time solves the problem of environmental pollution caused by disposal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for activating and regenerating waste industrial activated aluminum oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Immerse the waste air separation special alumina desiccant and water at a ratio of 1:5, use mechanical stirring to suspend and rub the alumina balls, separate the solid and liquid after 40 minutes, reuse the liquid, and put the solid phase in a blast drying oven at 105°C for drying 3h; immerse the pretreated alumina in a mixed solution of 4.0wt% sodium carbonate+5.0wt% nonylphenol polyoxyethylene ether (TX) in a volume ratio of 1:1 for 1h, and then Use 40kHz ultrasonic treatment for 30min, solid-liquid separation, liquid phase recycling, solid phase into 105 ℃ blast drying oven for 3h; wash the alumina according to the volume ratio of 1:1 to 4.0% (according to Al 2 o 3 total) aluminum sulfate solution for 60 minutes, solid-liquid separation, liquid phase recycling, solid phase was placed in a 150 ° C blast drying oven to dry for 1 h, then placed in a calciner and heated to 500 ° C at a rate of 17 K / min, and kept at 0.5 h, according to 500m during the calcination proces...

Embodiment 2

[0060] Immerse the waste air separation special alumina desiccant and water at a ratio of 1:5, use mechanical stirring to suspend and rub the alumina balls, separate the solid and liquid after 60 minutes, reuse the liquid, and put the solid phase in a blast drying oven at 105°C for drying 3h; Immerse the pretreated alumina in the mixed solution of 4.0wt% sodium carbonate+10.0wt% nonylphenol polyoxyethylene ether (TX) according to the volume ratio of 1:3, keep it for 2h, and then use 40kHz ultrasonic treatment for 60min, solid-liquid separation, liquid phase recycling, phase and solid phase were placed in a blast drying oven at 105°C for 3 hours; the cleaned alumina was immersed in 4.0% (according to Al 2 o 3 total) aluminum sulfate solution for 30 minutes, solid-liquid separation, liquid phase recycling, solid phase was placed in a 105 ° C blast drying oven to dry for 3 h, and then placed in a calciner to raise the temperature to 500 ° C at a rate of 10 K / min, keeping 0.5 h, ...

Embodiment 3

[0062] Immerse the waste air separation special alumina desiccant and water at a ratio of 1:1, use 25kHz ultrasonic cleaning for 20min, separate the solid from the liquid, reuse the liquid, and dry the solid in a blast drying oven at 90°C for 4h; Immerse aluminum in 8.0wt% nitric acid solution at a volume ratio of 1:3, keep it for 1h, then use 50kHz ultrasonic treatment for 10min, separate solid from liquid, reuse the liquid phase, put the phase and solid phase into a blast drying oven at 105°C and dry for 3h ; Immerse the cleaned alumina to 5.0% according to the volume ratio of 1:1 (according to Al 2 o 3 total) aluminum sulfate solution for 30 minutes, solid-liquid separation, liquid phase reuse, solid phase was placed in a 105 ° C blast drying oven to dry for 3 h, and then placed in a calciner to raise the temperature to 500 ° C at a rate of 10 K / min, and maintain 2.0 h, according to 500m during the calcination process 3 / (h·t) rate of air flow, get the specific surface ar...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
strengthaaaaaaaaaa
strengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for activating and regenerating waste industrial activated aluminum oxide. The method comprises pretreatment, cleaning liquid impregnation treatment and regeneration treatment; adopted cleaning liquid is selected from at least one of acid liquor and alkali liquor and surfactant solution; the regeneration treatment comprises regenerated liquid impregnation and calcination treatment, and adopted regenerated liquid is selected from aluminum-contained solution; the calcination treatment is performed under air atmosphere, and air inlet amount is 300 to 800 m<3>/(h.t). According to the method for activating and regenerating the waste industrial activated aluminum oxide provided by the invention, an original pore structure channel is dredged through a physical and chemical method, and a new pore structure is regenerated on the basis of the existing pore structure to obtain activated aluminum oxide with high specific surface area and high pore volume.

Description

technical field [0001] The invention relates to the field of regeneration of industrial solid waste, in particular to a method for activating and regenerating waste industrial activated alumina. Background technique [0002] Activated alumina is a highly dispersed, porous solid material with rich pores, good thermal stability, wear resistance, high crushing strength, high specific surface area, good adsorption performance, surface acidity, pore size and pore size Because of its adjustable characteristics, it is widely used as adsorbent, catalyst, catalyst carrier, desiccant, defluorinating agent, etc. With the rapid development of industry, the demand for activated alumina is also increasing. After a certain period of use, due to the adsorption of a large amount of impurities on the surface and internal pore structure (taking the waste air separation desiccant as an example, the alumina ball is earthy yellow, and the adsorbed impurities are mainly dust and mineral oil), res...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/02C01F7/46B01J20/34B01J20/08
CPCB01J20/08B01J20/3433B01J20/3475B01J20/3483C01F7/021C01F7/46C01P2006/12
Inventor 官宝红付海陆潘江江吴宪宏
Owner 杭州贝采催化剂有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap